./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbd82567 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a44ec3fe14113a3aba74e37fda369041ad122ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a44ec3fe14113a3aba74e37fda369041ad122ce ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.23-cbd8256-m [2018-11-28 11:47:16,811 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:47:16,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:47:16,826 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:47:16,826 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:47:16,827 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:47:16,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:47:16,832 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:47:16,834 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:47:16,835 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:47:16,835 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:47:16,836 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:47:16,837 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:47:16,838 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:47:16,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:47:16,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:47:16,842 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:47:16,844 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:47:16,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:47:16,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:47:16,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:47:16,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:47:16,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:47:16,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:47:16,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:47:16,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:47:16,857 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:47:16,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:47:16,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:47:16,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:47:16,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:47:16,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:47:16,863 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:47:16,864 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:47:16,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:47:16,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:47:16,866 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:47:16,883 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:47:16,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:47:16,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:47:16,884 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:47:16,885 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:47:16,885 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:47:16,886 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:47:16,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:47:16,886 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:47:16,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:47:16,886 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:47:16,887 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:47:16,889 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:47:16,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:47:16,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:47:16,889 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:47:16,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:47:16,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:47:16,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:47:16,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:47:16,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:47:16,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:47:16,891 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:47:16,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:47:16,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:47:16,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-11-28 11:47:16,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:47:16,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:47:16,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:47:16,949 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:47:16,950 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:47:16,950 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 11:47:17,013 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ee8d3ed/8de52c0b42434f9096fc2a024b05c2b6/FLAG67b2ed46a [2018-11-28 11:47:17,525 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:47:17,526 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 11:47:17,544 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ee8d3ed/8de52c0b42434f9096fc2a024b05c2b6/FLAG67b2ed46a [2018-11-28 11:47:17,818 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43ee8d3ed/8de52c0b42434f9096fc2a024b05c2b6 [2018-11-28 11:47:17,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:47:17,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:47:17,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:47:17,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:47:17,832 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:47:17,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:47:17" (1/1) ... [2018-11-28 11:47:17,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4f8bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:17, skipping insertion in model container [2018-11-28 11:47:17,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:47:17" (1/1) ... [2018-11-28 11:47:17,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:47:17,910 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:47:18,269 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:47:18,284 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:47:18,350 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:47:18,580 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:47:18,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18 WrapperNode [2018-11-28 11:47:18,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:47:18,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:47:18,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:47:18,583 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:47:18,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:47:18,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:47:18,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:47:18,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:47:18,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... [2018-11-28 11:47:18,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:47:18,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:47:18,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:47:18,715 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:47:18,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:47:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:47:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 11:47:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 11:47:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-28 11:47:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-28 11:47:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:47:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:47:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:47:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-28 11:47:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-28 11:47:18,780 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 11:47:18,932 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-28 11:47:19,241 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-28 11:47:19,258 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:47:19,259 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 11:47:19,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:47:19 BoogieIcfgContainer [2018-11-28 11:47:19,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:47:19,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:47:19,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:47:19,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:47:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:47:17" (1/3) ... [2018-11-28 11:47:19,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763a69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:47:19, skipping insertion in model container [2018-11-28 11:47:19,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:18" (2/3) ... [2018-11-28 11:47:19,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763a69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:47:19, skipping insertion in model container [2018-11-28 11:47:19,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:47:19" (3/3) ... [2018-11-28 11:47:19,267 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-28 11:47:19,304 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,304 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,304 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,304 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,305 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,305 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,305 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,306 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,306 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,306 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,306 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,307 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,307 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,308 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,309 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,309 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,309 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,310 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,312 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,312 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,312 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,312 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,313 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,313 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,313 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,313 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,314 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,314 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:19,427 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 11:47:19,427 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:47:19,436 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 11:47:19,454 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 11:47:19,480 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:47:19,481 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:47:19,481 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:47:19,481 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:47:19,481 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:47:19,481 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:47:19,481 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:47:19,482 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:47:19,482 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:47:19,492 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-28 11:47:21,400 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-28 11:47:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-28 11:47:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:47:21,412 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:21,413 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:21,416 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:21,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-28 11:47:21,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:21,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:21,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:21,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:21,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:21,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:21,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:21,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:21,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:21,812 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-28 11:47:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:22,814 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-28 11:47:22,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:22,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 11:47:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:23,099 INFO L225 Difference]: With dead ends: 52906 [2018-11-28 11:47:23,100 INFO L226 Difference]: Without dead ends: 36824 [2018-11-28 11:47:23,102 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:23,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-28 11:47:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-28 11:47:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-28 11:47:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-28 11:47:24,710 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-28 11:47:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:24,710 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-28 11:47:24,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-28 11:47:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 11:47:24,715 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:24,715 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:24,715 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:24,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-28 11:47:24,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:24,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:24,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:24,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:24,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:24,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:24,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:24,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:24,870 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-28 11:47:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:25,621 INFO L93 Difference]: Finished difference Result 36860 states and 131462 transitions. [2018-11-28 11:47:25,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:47:25,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 11:47:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:25,796 INFO L225 Difference]: With dead ends: 36860 [2018-11-28 11:47:25,796 INFO L226 Difference]: Without dead ends: 36500 [2018-11-28 11:47:25,797 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36500 states. [2018-11-28 11:47:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36500 to 24815. [2018-11-28 11:47:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-28 11:47:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 89636 transitions. [2018-11-28 11:47:27,100 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 89636 transitions. Word has length 25 [2018-11-28 11:47:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:27,101 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 89636 transitions. [2018-11-28 11:47:27,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 89636 transitions. [2018-11-28 11:47:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 11:47:27,104 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:27,104 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:27,105 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:27,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-28 11:47:27,106 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:27,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:27,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:27,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:27,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:27,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:27,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:47:27,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:47:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:47:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:27,441 INFO L87 Difference]: Start difference. First operand 24815 states and 89636 transitions. Second operand 5 states. [2018-11-28 11:47:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:27,933 INFO L93 Difference]: Finished difference Result 14369 states and 47935 transitions. [2018-11-28 11:47:27,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:27,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-11-28 11:47:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:27,985 INFO L225 Difference]: With dead ends: 14369 [2018-11-28 11:47:27,985 INFO L226 Difference]: Without dead ends: 13889 [2018-11-28 11:47:27,985 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2018-11-28 11:47:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 13889. [2018-11-28 11:47:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13889 states. [2018-11-28 11:47:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 46343 transitions. [2018-11-28 11:47:28,375 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 46343 transitions. Word has length 25 [2018-11-28 11:47:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:28,375 INFO L480 AbstractCegarLoop]: Abstraction has 13889 states and 46343 transitions. [2018-11-28 11:47:28,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:47:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 46343 transitions. [2018-11-28 11:47:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 11:47:28,380 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:28,380 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:28,380 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:28,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-28 11:47:28,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:28,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:28,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:28,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:47:28,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:28,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:28,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:28,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:28,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:28,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:28,539 INFO L87 Difference]: Start difference. First operand 13889 states and 46343 transitions. Second operand 4 states. [2018-11-28 11:47:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:29,288 INFO L93 Difference]: Finished difference Result 14756 states and 48986 transitions. [2018-11-28 11:47:29,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:29,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-28 11:47:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:29,319 INFO L225 Difference]: With dead ends: 14756 [2018-11-28 11:47:29,320 INFO L226 Difference]: Without dead ends: 8996 [2018-11-28 11:47:29,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2018-11-28 11:47:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 7637. [2018-11-28 11:47:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-28 11:47:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-28 11:47:30,049 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 29 [2018-11-28 11:47:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:30,051 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-28 11:47:30,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-28 11:47:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:47:30,060 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:30,060 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:30,060 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:30,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-28 11:47:30,062 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:30,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:30,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:30,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:30,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:30,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:30,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 11:47:30,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 11:47:30,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 11:47:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 11:47:30,347 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 6 states. [2018-11-28 11:47:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:30,716 INFO L93 Difference]: Finished difference Result 8537 states and 27535 transitions. [2018-11-28 11:47:30,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:47:30,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-28 11:47:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:30,743 INFO L225 Difference]: With dead ends: 8537 [2018-11-28 11:47:30,744 INFO L226 Difference]: Without dead ends: 7898 [2018-11-28 11:47:30,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 11:47:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2018-11-28 11:47:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7322. [2018-11-28 11:47:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-28 11:47:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-28 11:47:30,953 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-28 11:47:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:30,956 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-28 11:47:30,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 11:47:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-28 11:47:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:47:30,971 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:30,971 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:30,971 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:30,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:30,973 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-28 11:47:30,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:47:30,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:47:30,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:30,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:30,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:47:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:47:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:47:31,049 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-28 11:47:31,060 INFO L168 Benchmark]: Toolchain (without parser) took 13236.91 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 799.5 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 612.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:31,062 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:47:31,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:31,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:31,065 INFO L168 Benchmark]: Boogie Preprocessor took 52.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:47:31,065 INFO L168 Benchmark]: RCFGBuilder took 544.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:31,067 INFO L168 Benchmark]: TraceAbstraction took 11798.48 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 671.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). Peak memory consumption was 612.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:31,073 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 756.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 78.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 544.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11798.48 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 671.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). Peak memory consumption was 612.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-cbd8256-m [2018-11-28 11:47:33,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:47:33,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:47:33,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:47:33,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:47:33,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:47:33,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:47:33,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:47:33,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:47:33,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:47:33,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:47:33,653 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:47:33,654 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:47:33,655 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:47:33,657 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:47:33,658 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:47:33,659 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:47:33,661 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:47:33,663 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:47:33,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:47:33,666 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:47:33,668 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:47:33,671 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:47:33,671 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:47:33,672 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:47:33,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:47:33,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:47:33,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:47:33,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:47:33,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:47:33,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:47:33,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:47:33,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:47:33,679 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:47:33,680 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:47:33,686 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:47:33,686 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 11:47:33,720 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:47:33,720 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:47:33,722 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:47:33,723 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:47:33,725 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:47:33,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:47:33,725 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:47:33,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:47:33,726 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:47:33,726 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 11:47:33,727 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 11:47:33,728 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:47:33,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:47:33,728 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:47:33,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:47:33,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:47:33,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:47:33,730 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:47:33,730 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:47:33,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:47:33,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:47:33,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:47:33,731 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:47:33,731 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 11:47:33,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:47:33,732 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 11:47:33,732 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 11:47:33,732 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a44ec3fe14113a3aba74e37fda369041ad122ce [2018-11-28 11:47:33,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:47:33,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:47:33,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:47:33,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:47:33,828 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:47:33,830 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 11:47:33,908 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b37ba93d/d190de0b7563484ca7ed6bdcc4d98672/FLAGf45622753 [2018-11-28 11:47:34,534 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:47:34,535 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-atomic/read_write_lock_false-unreach-call.i [2018-11-28 11:47:34,550 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b37ba93d/d190de0b7563484ca7ed6bdcc4d98672/FLAGf45622753 [2018-11-28 11:47:34,772 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b37ba93d/d190de0b7563484ca7ed6bdcc4d98672 [2018-11-28 11:47:34,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:47:34,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:47:34,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:47:34,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:47:34,785 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:47:34,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:47:34" (1/1) ... [2018-11-28 11:47:34,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a84f20e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:34, skipping insertion in model container [2018-11-28 11:47:34,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:47:34" (1/1) ... [2018-11-28 11:47:34,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:47:34,852 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:47:35,304 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:47:35,323 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:47:35,417 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:47:35,522 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:47:35,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35 WrapperNode [2018-11-28 11:47:35,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:47:35,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:47:35,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:47:35,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:47:35,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:47:35,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:47:35,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:47:35,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:47:35,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... [2018-11-28 11:47:35,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:47:35,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:47:35,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:47:35,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:47:35,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:47:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 11:47:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 11:47:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2018-11-28 11:47:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2018-11-28 11:47:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 11:47:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 11:47:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:47:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:47:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2018-11-28 11:47:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2018-11-28 11:47:35,812 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 11:47:36,056 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2018-11-28 11:47:36,396 INFO L1421 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2018-11-28 11:47:36,422 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:47:36,422 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 11:47:36,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:47:36 BoogieIcfgContainer [2018-11-28 11:47:36,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:47:36,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:47:36,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:47:36,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:47:36,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:47:34" (1/3) ... [2018-11-28 11:47:36,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2652c24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:47:36, skipping insertion in model container [2018-11-28 11:47:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:47:35" (2/3) ... [2018-11-28 11:47:36,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2652c24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:47:36, skipping insertion in model container [2018-11-28 11:47:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:47:36" (3/3) ... [2018-11-28 11:47:36,434 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock_false-unreach-call.i [2018-11-28 11:47:36,476 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,476 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,476 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,476 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,477 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,477 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,477 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,478 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,478 WARN L317 ript$VariableManager]: TermVariabe Thread2_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,478 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,478 WARN L317 ript$VariableManager]: TermVariabe |Thread2_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,479 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,479 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,479 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,479 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,479 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,480 WARN L317 ript$VariableManager]: TermVariabe Thread0_reader_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,481 WARN L317 ript$VariableManager]: TermVariabe |Thread0_reader_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,481 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,481 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,482 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,482 WARN L317 ript$VariableManager]: TermVariabe Thread3_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,482 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,482 WARN L317 ript$VariableManager]: TermVariabe |Thread3_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe Thread1_writer_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,483 WARN L317 ript$VariableManager]: TermVariabe |Thread1_writer_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 11:47:36,584 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 11:47:36,585 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:47:36,595 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-28 11:47:36,614 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-28 11:47:36,643 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:47:36,644 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:47:36,644 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:47:36,644 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:47:36,644 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:47:36,644 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:47:36,644 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:47:36,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:47:36,645 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:47:36,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84places, 93 transitions [2018-11-28 11:47:39,332 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26397 states. [2018-11-28 11:47:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states. [2018-11-28 11:47:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 11:47:39,345 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:39,347 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:39,349 INFO L423 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:39,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:39,355 INFO L82 PathProgramCache]: Analyzing trace with hash 563310493, now seen corresponding path program 1 times [2018-11-28 11:47:39,360 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:39,360 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:39,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:39,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:39,640 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:39,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:39,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:39,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:39,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:39,686 INFO L87 Difference]: Start difference. First operand 26397 states. Second operand 4 states. [2018-11-28 11:47:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:41,104 INFO L93 Difference]: Finished difference Result 52906 states and 202299 transitions. [2018-11-28 11:47:41,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:41,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 11:47:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:41,467 INFO L225 Difference]: With dead ends: 52906 [2018-11-28 11:47:41,468 INFO L226 Difference]: Without dead ends: 36824 [2018-11-28 11:47:41,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36824 states. [2018-11-28 11:47:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36824 to 22832. [2018-11-28 11:47:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22832 states. [2018-11-28 11:47:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22832 states to 22832 states and 87504 transitions. [2018-11-28 11:47:43,424 INFO L78 Accepts]: Start accepts. Automaton has 22832 states and 87504 transitions. Word has length 23 [2018-11-28 11:47:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:43,426 INFO L480 AbstractCegarLoop]: Abstraction has 22832 states and 87504 transitions. [2018-11-28 11:47:43,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:43,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22832 states and 87504 transitions. [2018-11-28 11:47:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 11:47:43,434 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:43,434 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:43,436 INFO L423 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:43,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:43,438 INFO L82 PathProgramCache]: Analyzing trace with hash 175754366, now seen corresponding path program 1 times [2018-11-28 11:47:43,439 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:43,441 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:43,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:43,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:43,704 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:43,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:43,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:43,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:43,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:43,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:43,716 INFO L87 Difference]: Start difference. First operand 22832 states and 87504 transitions. Second operand 4 states. [2018-11-28 11:47:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:44,938 INFO L93 Difference]: Finished difference Result 44834 states and 165805 transitions. [2018-11-28 11:47:44,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:47:44,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-28 11:47:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:45,205 INFO L225 Difference]: With dead ends: 44834 [2018-11-28 11:47:45,206 INFO L226 Difference]: Without dead ends: 44474 [2018-11-28 11:47:45,207 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44474 states. [2018-11-28 11:47:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44474 to 24815. [2018-11-28 11:47:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24815 states. [2018-11-28 11:47:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24815 states to 24815 states and 92018 transitions. [2018-11-28 11:47:46,929 INFO L78 Accepts]: Start accepts. Automaton has 24815 states and 92018 transitions. Word has length 25 [2018-11-28 11:47:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:46,930 INFO L480 AbstractCegarLoop]: Abstraction has 24815 states and 92018 transitions. [2018-11-28 11:47:46,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24815 states and 92018 transitions. [2018-11-28 11:47:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 11:47:46,938 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:46,939 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:46,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:46,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1318827774, now seen corresponding path program 2 times [2018-11-28 11:47:46,940 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:46,940 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:46,979 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 11:47:47,027 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 11:47:47,028 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:47:47,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:47,091 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:47,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:47,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:47:47,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:47:47,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:47:47,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:47:47,097 INFO L87 Difference]: Start difference. First operand 24815 states and 92018 transitions. Second operand 3 states. [2018-11-28 11:47:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:47,300 INFO L93 Difference]: Finished difference Result 18827 states and 66927 transitions. [2018-11-28 11:47:47,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:47:47,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-28 11:47:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:47,382 INFO L225 Difference]: With dead ends: 18827 [2018-11-28 11:47:47,382 INFO L226 Difference]: Without dead ends: 18347 [2018-11-28 11:47:47,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:47:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18347 states. [2018-11-28 11:47:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18347 to 18347. [2018-11-28 11:47:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18347 states. [2018-11-28 11:47:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18347 states to 18347 states and 65335 transitions. [2018-11-28 11:47:48,583 INFO L78 Accepts]: Start accepts. Automaton has 18347 states and 65335 transitions. Word has length 25 [2018-11-28 11:47:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:48,583 INFO L480 AbstractCegarLoop]: Abstraction has 18347 states and 65335 transitions. [2018-11-28 11:47:48,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:47:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18347 states and 65335 transitions. [2018-11-28 11:47:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 11:47:48,587 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:48,588 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:48,588 INFO L423 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:48,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1891005508, now seen corresponding path program 1 times [2018-11-28 11:47:48,589 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:48,589 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:48,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:47:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:48,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:48,779 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:48,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:48,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:47:48,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 11:47:48,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:47:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:47:48,784 INFO L87 Difference]: Start difference. First operand 18347 states and 65335 transitions. Second operand 4 states. [2018-11-28 11:47:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:49,816 INFO L93 Difference]: Finished difference Result 32444 states and 115032 transitions. [2018-11-28 11:47:49,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:49,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-28 11:47:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:49,922 INFO L225 Difference]: With dead ends: 32444 [2018-11-28 11:47:49,922 INFO L226 Difference]: Without dead ends: 25844 [2018-11-28 11:47:49,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2018-11-28 11:47:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 15197. [2018-11-28 11:47:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15197 states. [2018-11-28 11:47:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15197 states to 15197 states and 54478 transitions. [2018-11-28 11:47:50,525 INFO L78 Accepts]: Start accepts. Automaton has 15197 states and 54478 transitions. Word has length 29 [2018-11-28 11:47:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:50,527 INFO L480 AbstractCegarLoop]: Abstraction has 15197 states and 54478 transitions. [2018-11-28 11:47:50,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 11:47:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15197 states and 54478 transitions. [2018-11-28 11:47:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 11:47:50,532 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:50,532 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:50,532 INFO L423 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:50,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:50,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1356359066, now seen corresponding path program 1 times [2018-11-28 11:47:50,533 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:50,533 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:50,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:50,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:50,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:50,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:50,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:47:50,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:47:50,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:47:50,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:50,805 INFO L87 Difference]: Start difference. First operand 15197 states and 54478 transitions. Second operand 5 states. [2018-11-28 11:47:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:51,135 INFO L93 Difference]: Finished difference Result 8213 states and 26746 transitions. [2018-11-28 11:47:51,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:47:51,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-11-28 11:47:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:51,160 INFO L225 Difference]: With dead ends: 8213 [2018-11-28 11:47:51,160 INFO L226 Difference]: Without dead ends: 8213 [2018-11-28 11:47:51,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2018-11-28 11:47:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 7637. [2018-11-28 11:47:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2018-11-28 11:47:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 24730 transitions. [2018-11-28 11:47:51,396 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 24730 transitions. Word has length 33 [2018-11-28 11:47:51,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:51,396 INFO L480 AbstractCegarLoop]: Abstraction has 7637 states and 24730 transitions. [2018-11-28 11:47:51,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:47:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 24730 transitions. [2018-11-28 11:47:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:47:51,406 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:51,407 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:51,407 INFO L423 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:51,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1715420402, now seen corresponding path program 1 times [2018-11-28 11:47:51,408 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:51,408 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:51,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:47:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:47:51,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:47:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:47:51,719 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 11:47:51,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:47:51,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:47:51,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:47:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:47:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:47:51,723 INFO L87 Difference]: Start difference. First operand 7637 states and 24730 transitions. Second operand 5 states. [2018-11-28 11:47:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:47:52,290 INFO L93 Difference]: Finished difference Result 11390 states and 37095 transitions. [2018-11-28 11:47:52,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 11:47:52,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-28 11:47:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:47:52,319 INFO L225 Difference]: With dead ends: 11390 [2018-11-28 11:47:52,319 INFO L226 Difference]: Without dead ends: 10751 [2018-11-28 11:47:52,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-28 11:47:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2018-11-28 11:47:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 7322. [2018-11-28 11:47:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2018-11-28 11:47:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 23826 transitions. [2018-11-28 11:47:52,582 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 23826 transitions. Word has length 38 [2018-11-28 11:47:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:47:52,582 INFO L480 AbstractCegarLoop]: Abstraction has 7322 states and 23826 transitions. [2018-11-28 11:47:52,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:47:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 23826 transitions. [2018-11-28 11:47:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 11:47:52,591 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:47:52,591 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:47:52,592 INFO L423 AbstractCegarLoop]: === Iteration 7 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:47:52,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:47:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 140136184, now seen corresponding path program 2 times [2018-11-28 11:47:52,592 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 11:47:52,593 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:52,627 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-28 11:47:53,071 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 11:47:53,071 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-28 11:47:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:47:53,416 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 11:47:53,416 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-28 11:47:53,429 INFO L168 Benchmark]: Toolchain (without parser) took 18652.26 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 866.1 MB). Free memory was 951.3 MB in the beginning and 1.5 GB in the end (delta: -511.0 MB). Peak memory consumption was 355.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:53,432 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:47:53,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 913.7 MB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:53,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 913.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:53,440 INFO L168 Benchmark]: Boogie Preprocessor took 57.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:47:53,443 INFO L168 Benchmark]: RCFGBuilder took 681.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:53,443 INFO L168 Benchmark]: TraceAbstraction took 16998.87 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 743.4 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -376.9 MB). Peak memory consumption was 366.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:47:53,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 743.66 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 913.7 MB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 160.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 913.7 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 681.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16998.87 ms. Allocated memory was 1.2 GB in the beginning and 1.9 GB in the end (delta: 743.4 MB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -376.9 MB). Peak memory consumption was 366.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...